METHOD FOR MAKING ARCUATE COIL SPRINGS, RESULTING SPRINGS AND DEVICES FOR CARRYING OUT THE METHOD

摘要

PCT No. PCT/FR96/01479 Sec. 371 Date Jun. 12, 1997 Sec. 102(e) Date Jun. 12, 1997 PCT Filed Sep. 23, 1996 PCT Pub. No. WO97/11201 PCT Pub. Date Mar. 27, 1997The invention relates to a method for making arcuate coil springs from straight coil springs and particularly includes a phase of bending the straight springs during a heat treatment, which method provides exceptional results in that for the bending, a lasting arcuate shape is imparted to the springs substantially by giving the springs the shape of a portion of a turn to provide the spring with a counter-defect prior to the subsequent finishing steps. The invention also relates to a spring manufactured according to such a method and to devices for carrying out the method which include devices for holding at least the end coils of the springs in staggered positions, which devices may include a holder provided with fastening devices.